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JBL Synchros E40BT

On-ear Bluetooth® headphones (Blue)

65 Reviews | 6 questions - 29 answers

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Item # 109E40BTL

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Overview

Our take on the JBL Synchros E40BT

You don't have to spend a lot of money to get headphones with Bluetooth wireless connectivity and good sound. The JBL Synchros E40BT delivers both at an impressively low price. They're cleverly styled, well built, and offer JBL's legendary sound, with PureBass technology ensuring your music has plenty of low-frequency power. Stow your smartphone in your pocket and listen wirelessly, using the the earcup controls to play and pause music, adjust the volume, or even take a hands-free call with the built-in microphone.

JBL Synchros E40BT

Earcup buttons keep you in control of music and calls when you're listening wirelessly with the Synchros E40BT (shown in Red).

Bluetooth on a budget

You don't have to spend a lot of money to get headphones with Bluetooth wireless connectivity and good sound. The JBL Synchros E40BT delivers both at an impressively low price. They're cleverly styled, well built, and offer JBL's legendary sound, with PureBass technology ensuring your music has plenty of low-frequency power. Stow your smartphone in your pocket and listen wirelessly, using the the earcup controls to play and pause music, adjust the volume, or even take a hands-free call with the built-in microphone.

Wireless or wired listening

The Synchros E40BT run on a built-in rechargeable battery, which provides up to 16 hours of use. If your battery runs down, you won't be stuck without music. Simply connect the included headphone cable and keep listening in wired mode. Then, use your computer or a USB AC charger to get your headphones charged up for more wireless use.

Share a song wirelessly

One pair of E40BT headphones is cool. Two pairs can do something really cool. You can stream music to another pair of headphones wirelessly using JBL's ShareMe™ technology. This allows two people to listen to the same song from the same source at the same time. You can share music with any two pairs of ShareMe compatible headphones.

Product Highlights:

  • 40mm dynamic drivers
  • Bluetooth 3.0 and A2DP connectivity for wireless music listening and phone calls with compatible smartphones
  • earcup buttons offer music, volume, and call controls for compatible Bluetooth connected smartphones
  • built-in earcup microphone with echo-cancellation for clear, hands-free calls with a smartphone
  • PureBass technology delivers low-frequency response with detail and accuracy
  • ShareMe technology allows you to stream music wirelessly to a second pair of ShareMe compatible headphones
  • includes miniplug headphone cable for wired listening (disables Bluetooth functionality)
  • earcups swivel and fold flat for easy storage
  • built-in rechargeable battery provides up to 16 hours of music listening
  • USB charging cable included
  • frequency response: 20-22,000 Hz
  • impedance: 32 ohms
  • warranty: 1 year
  • Our 60-day money-back guarantee

The headphones work perfect the sound is very well which I can hear from both ears and without the cord I can walk around without the problem but in all the headphones work very well. -Josh Weaver 14, Mike's son

Josh Weaver, Leola, PA

What's in the Box:

  • On-ear Bluetooth headphones (blue)
  • 50" Straight audio cable (straight 2.5mm plug on one end and a right angled 3.5mm plug on other end)
  • 40" Straight USB cable for charging (straight 2.5mm plug on one end and Type A USB plug on other end)
  • Quick Start Guide
  • Warranty sheet

Featured Video:

Reviews

JBL Synchros E40BT Reviews

Average Customer Review(s):

(65 Reviews)

JBLe40tb

Josh Weaver from Leola, PA on 10/10/2017

Crutchfield Customer Review (What's this?)

The headphones work perfect the sound is very well which I can hear from both ears and without the cord I can walk around without the problem but in all the headphones work very well. -Josh Weaver 14, Mike's son

Pros: work perfect the sound is very well

Cons: none

GOOD BASS

WILLIAM from West Palm Beach, FL on 7/16/2017

Crutchfield Customer Review (What's this?)

NOT THE BEST FOR THE OPERATIC VOICE. JUST ACCEPTABLE .

Pros: PRETTY EVENLY BALANCED RANGE.

Cons: EXPECTED A LITTLE MORE UPPER RANGE VOCALLY FOR OPERAS.

my time

melvin from South Bend, IN on 5/16/2017

Crutchfield Customer Review (What's this?)

love them they give me my quiet time on my computer

Pros: sounds good

Cons:

JBL Synchros E40BT

Stephen from Winchester, Ky on 4/12/2017

Crutchfield Customer Review (What's this?)

Great headphones, sound is great and clear, Bluetooth is easy, very happy with my purchase.

Pros:

Cons:

JBL Synchros E40BT

Anonymous from Milwaukee, WI on 3/19/2017

Crutchfield Customer Review (What's this?)

In between 1-2 years of ownership in which I mostly use to talk on the phone with while driving, one ear no longer works. I bought these to be able to hear in both ears and now I'm back to one again.

Pros:

Cons:

Great Bluetooth Headphones

Gayle from Baton Rouge, LA on 3/8/2017

Crutchfield Customer Review (What's this?)

Bought these to use with a noisy elliptical machine so that we could exercise and watch TV at the same time. They were easy to pair with our smart TV by following the directions in our TV user manual and seconded by a very helpful Crutchfield advisor who helped us pick them out. We have used them for two weeks, and they seem to work fine.

Pros: Easy to set up. Work as expected. Good value for the price.

Cons: None so far.

Major disappointment

Donald from Benton, AR on 2/7/2017

Crutchfield Customer Review (What's this?)

These might be very good headphones, but I'm afraid I will never know, because the user manual is nonexistent. All that is provided is a quick start brochure that is woefully inadequate. It doesn't even explain the controls well, and the link provided for a complete manual is a dead end. The online help was no help at all. 30 minutes spent trying to link with my smart tv was a complete waste. I remember when JBL was a name I trusted. No more.

Pros: I'll let you know, when I discover one.

Cons: Horrible documentation

Crutchfield response on 2/21/2017 Once we saw this review, our Tech Support team reached out to Donald to issue an apology and help him further. We'll either help him get the headphones working the way they should, or help him return them for an exchange or refund. Also, to help save on costs and protect the environment, many products don't include an owner's manual in the box. Manufacturers either include it on a disc or send you to their website to download it. However, one of our tech support Advisors, Josh, takes the time to scan the manuals for products we carry, so you can access them right from our web site. The first item appearing in the "What's in the box?" section for a product on our site is a link to the owner's manual. You can view it in your browser or download it to your computer.

JBL Synchros E40BT

tim from Oceanside, CA on 1/27/2017

Crutchfield Customer Review (What's this?)

I am happen with the purchase, it is not very expensive, base sounds sufficient, it provides clear, full sound. Bluetooth is easy to set up.

Pros: Nice looking

Cons: Wish it can be folded a littler smaller.

JBL Synchros E40BT

Anonymous from MD on 1/23/2017

Crutchfield Customer Review (What's this?)

Sound is great for the price. Comfortable to wear for hours. The articulating ear pieces help. Bluetooth synch was easy and flawless across multiple devices.

Pros:

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JBL Synchros E40BT

Anonymous from barceloneta pr. on 1/14/2017

Crutchfield Customer Review (What's this?)

Great value easy set up.

Pros:

Cons:

Nice sound, uncomfortable fit

Kevin from Findlay, OH on 1/12/2017

Crutchfield Customer Review (What's this?)

I must be getting older, but the JBL's were not very comfortable for me no matter how I tried them on. I have a "normal"-sized head (S/M hat size) and the JBL's were quite tight. Maybe they will loosen up over time as others have mentioned. Since these are an "on the ear" design, the pressure on my ears would give me a headache after only a few minutes (yes - at low volume!). Sound quality, as others have written, is pretty good - especially when the price is considered. Considering I am the only one to have this issue, I'm afraid my ears just don't fit these. Just passing along my experience.

Pros: Sound, Price, lightweight

Cons: FIt

Perfect Fit and Color

Kevin from Coatesville, IN on 12/24/2016

Crutchfield Customer Review (What's this?)

Was a presemt for my wife. She loved it, the sound and fit were both awesome. She loved the ability to go wireless or use the wires.

Pros: Fit, sound, option to use wires if wanted

Cons: none

Love the color options

William from DE on 12/20/2016

Crutchfield Customer Review (What's this?)

I'll know more once Christmas day gets here as it a present for my son.

Pros:

Cons:

great

joe from asheville, nc on 12/19/2016

Crutchfield Customer Review (What's this?)

Great fit and size. good sound.

Pros: Good sound good fit quality feel

Cons: none

Great Value

David from Blue Grass, IA on 12/8/2016

Crutchfield Customer Review (What's this?)

These headphones are comfortable, easy to pair, and have very good sound quality. Not top of the line, but a great value.

Pros: Priced Right. Comfortable. Easy to Pair.

Cons: None.

Great headphones

Doel from Puerto Rico on 12/5/2016

Crutchfield Customer Review (What's this?)

Sounds nice..Daughter loves it

Pros: Price, sound

Cons: None at this time

Decent Sound, comfortable

joe from Roanoke, VA on 12/4/2016

Crutchfield Customer Review (What's this?)

Nice headphones. Good Sound but could use just a little more Bass. Nice design, fits well, comfortable.

Pros: Good value

Cons: Could use just a tad more Bass

JBL Synchros E40BT

Michael from Hereford, TX on 12/4/2016

Crutchfield Customer Review (What's this?)

This Bluetooth headset is amazing

Pros:

Cons:

JBL Synchros E40BT

Edward from Albuquerque, NM on 9/20/2016

Crutchfield Customer Review (What's this?)

These are my frist blue tooth head phones and i am like the sound . They are very light to thats a plus for me .

Pros: great sound .

Cons: none.

Wireless headphones

Anonymous from Anaheim, CA on 9/6/2016

Crutchfield Customer Review (What's this?)

A great buy for the price! These are my first wireless headphones and I'm very satisfied.

Pros: Light, good sound and long battery life.

Cons: None

Verndeville

Kevern from Canyon Country on 6/15/2016

Crutchfield Customer Review (What's this?)

I purchased these headphones because of the name. These are more for the sensitive ears (soft listeners). I got them mainly for the gym but had to return them after the 60 days because lack of bass which u need for that extra motivation while at the gym. I exchanged them for the AKG which I will review at a later date. I hope this little bit of info was helpful knowing that everyone rates by their experience.

Pros: Long battery life

Cons: Lack of bass and battery dies without any warnings

Great for the price

RLH from Circleville, OH on 3/28/2016

Crutchfield Customer Review (What's this?)

I bought these to replace my earbuds at times that I don't move as much. They work great and were a good price. Sometimes they seem to be difficult to connect with my phone but I'm getting past that little issue.

Pros: Light and good sound

Cons: Cheaper construction than expected,

JBL Synchros E40BT

Anonymous from Allenhurst, Ga. on 1/11/2016

Crutchfield Customer Review (What's this?)

Was Christmas gift purchased given to family it is enjoyed

Pros: Works really good

Cons:

JBL Synchros E40BT Review

jason from New Jersey on 1/5/2016

Crutchfield Customer Review (What's this?)

great head phones build quality coulb be a bit better ,first day a screw came off

Pros:

Cons:

Solid set of headphones

fredw from Virginia on 12/29/2015

Crutchfield Customer Review (What's this?)

a good set of headphones for a young adult. Good sound, easy set up, well built.

Pros:

Cons:

Just what I was expecting

DanT from Michigan on 12/25/2015

Crutchfield Customer Review (What's this?)

These are just about what I expected. The appearance and the sound quality are very much in line with the price I paid. The comfort level is somewhat low, but that also comes at more of a price. Overall, I am satisfied with my purchase.

Pros: Appearance Easy to set up and use Sound quality good for price

Cons: Hurt ears after s while

Cool, comfortable, clarity, cost----the perfect 4four "C"s.

PGV from New York on 12/19/2015

Cool, comfortable, clarity, cost----the perfect 4 "C"s

Pros:

Cons:

Great product

Jeremy from Taos nm on 12/13/2015

Crutchfield Customer Review (What's this?)

Great product

Pros: Lightweight

Cons:

Good headphones

rodgerrc from North Carolina on 12/12/2015

Crutchfield Customer Review (What's this?)

Gift for my grandson.

Pros: Lightweight

Cons: None

Great product

JohnS from Lexington, Virginia on 11/29/2015

Crutchfield Customer Review (What's this?)

Perfect for what I wanted.

Pros: Style and quality.

Cons: None.

her headphones

Ed from Colorado on 10/25/2015

Crutchfield Customer Review (What's this?)

Wife loves her headphones good job JBL

Pros: Light weight good color choices

Cons: Nothing she can come up with

Good headpfhones

Javier from New Jersey on 10/18/2015

Crutchfield Customer Review (What's this?)

Very good headphones

Pros:

Cons:

Great for the Price

Chris O from San Antonio Tx on 6/28/2015

Crutchfield Customer Review (What's this?)

I'm aways working outside and these headphones provide great sound for the price! !!!

Pros: Wireless and good battery life, haven't lost a connection yet

Cons: Kinda lacks on the bass

JBL Synchros E40BT

Mike from Wisconsin on 6/21/2015

Crutchfield Customer Review (What's this?)

With the music only 1/4 to half volume they reduce the noise from the dyno at a Harley Davidson dealership, so I would say they are pretty good. Love the bass and the sounds in songs that I have not heard on a regular car stereo. Will be buying this again for the price they are awesome.

Pros: Easy connection to ipod and computer. Great sound quality. Good bass not too over the top pounding. Comfortable.

Cons: Hard to remember how many times to hit the button to go back or forward etc on playlist.

Great "wireless" headphones if they are plugged in...

UMMMHELLO from CHICAGO,IL on 5/25/2015

Crutchfield Customer Review (What's this?)

Great looking and sounding headphones (for the price) with a rather large caveat. Wanted to give them a better review but they only rreach their full potential when plugged in via included wire; I don't know if its just me but would have liked the audio jack to have been on the right cup. I use then for my 27" iMac who's audio port is on the right so the cord winds up resting across my chest and in the way of my mouse. Annoying but because cord is so light after a while I don't notice it. The reason for the llow review...the Bluetooth. What can I say, it's really lacking. Bought these as a cheap option for a wireless set of cans but very disappointed by the Bluetooth sound quality. Very flat and just has no punch. Leaves me using my "wireless" cans as corder headphones 90% of the time, which of course defeats the purpose of them being wireless. They do look great and the cups have a nice swivel capability that makes them very comfortable even when I'm wearing glasses. I honestly would have returned them because my intent was to purchase a cheap decent WIRELESS headset, but because the sound quality is there for the price on any similar corded pair I decided tokeep them because if I absolutely have to walkaway from my Mac, I do at least have that option. Moral of the story is, if you are looking for a great sounding pair of WIRELESS headphones don't be cheap like me and fork down more of you hard earned cash on something else.

Pros: Great feel and look. Very decent sound for the price if its used as a corded set.

Cons: Bluetooth qualityWould have preffered audio jack to have been on right ear cup.

Solid Performance

Bob W from California on 4/7/2015

Crutchfield Customer Review (What's this?)

JBL Synchros headphones are solid performers especially given the $100 price tag. First, they are bluetooth-capable. I have become a big fan of bluetooth headphones since making the switch on my last phones. The JBLs link up with no problems to my Android phone. Battery life is good; probably in the 10-15 hour range as advertised. (I have found that listening to them fully charged enhances the sound to some degree.) My prior headphones were a pair of Beats Wireless so the switch to the JBLs took some getting used to. Beats, of course, are known for their bass and the JBLs do not have the same boost on the bass end. That being said, I have grown to like the more balanced sound of the JBLs. I find the fit very comfortable and the controls to be simple. Using them to take phone calls is no problem. I can hear those on the other end and vis versa. Definitely recommend.

Pros: Good balanced sound, good fit, good value for Bluetooth headphones.

Cons: Wish they had a carrying case.

Quality under a $100

Benjie B from Washington on 3/31/2015

Crutchfield Customer Review (What's this?)

You can't go wrong with JBL brand. For the money, the sound wasn't a disappointment. It looks great and it delivers. The only thing I didn't like is the ear cup it too small. After using it for a while my ears are starting to hurt. Otherwise, this item is a steal :)

Pros: Sounds great and pairing to a similar headphone is a cool feature.

Cons: It could use more padding for ear or a bigger ear enclose.

JBL Synchros E40BT

Anonymous from Memphis,Tn on 3/30/2015

Crutchfield Customer Review (What's this?)

I think this is a great headset for the price range its in. The sound quality is good. I use it with my Android based phone and tablets and my Windows laptop. I know this may seem trivial but I really like how with just one quick press of the control on the headset it turns off or on. Pairing is easy and quick and the range seems fine. The only thing that surprised me is the connector on the headset you use for charging is not usb. They provide a cable with a standard full size USB on one end but on the other end is 3.5mm for the headset. If you lose your cable or forget it while traveling you are out of luck. They provide a standard audio 3.5mm cable also for wired sound that plugs into the same connector that is used for charging. Wish they would have used a micro USB on the headset instead. Have had more comfortable headsets before but after using it for a while it became more comfortable, not as tight.

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At long last

Peddler from Charlotte on 2/15/2015

Crutchfield Customer Review (What's this?)

In the process of raising a family the music that was always a part of my life was put on hold. These headphones allow me the freedom to roam the house without being tethered to a cord and they bring the music I miss so much back in the way I enjoy hearing it... loud and clear. I had the 50BT's but they prevented me from hearing any of the goings on around the house. That, plus the over-the-ear style of the 50's were less than comfortable when wearing glasses while tying flies. The E40BT 'phones are simply way more than I expected in headphones... they sound fantastic, were a snap to pair and are very comfortable. I'm glad I found them and very glad Crutchfield gave me the chance to try them.

Pros: Comfort, pairing ease, price and sound quality.

Cons: A bit overboard on the JBL logo's but that's about it in my book.

Great Headphones!

Anonymous from Wisconsin on 1/26/2015

Crutchfield Customer Review (What's this?)

Overall, they were exactly what I wanted: wireless/bluetooth, comfortable, over the ear and great sound. I read a lot of reviews before purchasing and bought the E50 for my fiance for Christmas. He loves his, but I opted to go down one model and wasn't disappointed. They are smaller than the E50 but I have smaller ears, so that doesn't bother me. They are all they advertise to be and worth every penny compared to spending 3 times the money on a more "popular" brand. The sharing feature worked great while traveling as we could listen to the same thing from one device on both of our headphones.

Pros: -wireless -easy to use -sound quality -comfort -customer service from Crutchfield

Cons: -E40 are a little less solidly built than E50 but to be expected for price difference

JBL Synchros E40BT

Anonymous from Meridian, ID on 1/18/2015

Crutchfield Customer Review (What's this?)

Great value for money, love them able to use at gym without carrying my phone.

Pros:

Cons:

JBL Synchros E40BT

Anonymous from Dayton, OH on 1/12/2015

Crutchfield Customer Review (What's this?)

Good sound. Good value

Pros:

Cons:

love them

Natalie from Fresno,ca on 1/11/2015

Crutchfield Customer Review (What's this?)

I bought these for my husband birthday and he loves them. They work so good and the Bluetooth reaches far. The customer service was GREAT ??

Pros: LOVE THE COLOR AND SOUND

Cons: NONE

Why Pay More?

MikeR from Ohio on 1/10/2015

Crutchfield Customer Review (What's this?)

Bluetooth, AND noise reducing, for the price, are you kidding?

Pros: Great sound for the price.

Cons: Nothing to complain about at this time... seem to be a good product.

JBL Synchros E40BT

xynobis from St. Pete, FL on 1/9/2015

Crutchfield Customer Review (What's this?)

This is a good set for the money, sound is good, quality seems to be good. Hopefully the "leather" will last a long time and doesn't fall apart anytime soon. Had them on for about 3 hours straight and my ears did not hurt, so they're quite comfortable. They pair really quick and without any problems.

Pros: Good design, sound, cables to hook'em up if you're out of juice.

Cons: None at this point.

jbl synchros bluetooth headphones

Anonymous from Oxnard, CA on 1/6/2015

Crutchfield Customer Review (What's this?)

Awesome shipping time. Received on time before Christmas.

Pros: Easy to sync. Very comfortable, very easy to use. Great sound.

Cons: Could be a little louder.

JBL Synchros E40BT

Engobo from San Diego, CA on 1/3/2015

Crutchfield Customer Review (What's this?)

Great overall product for the price. I like the simplicity of the design; functional yet cool. Love the fact that you can use it both wireless or wired for those times you have extended beyond your battery's life! Also like that the charging cable uses the same input jack as for the wired RCA jack.

Pros:

Cons:

JBL Synchros E40BT

Rhino from Cassville, GA on 1/1/2015

Crutchfield Customer Review (What's this?)

Good Value for the price for Bluetooth abliliry. Could use some higher volume levels.

Pros: Good value for Bluetooth

Cons: Volume could use some increased ability.

Best Bluetooth Headphones Ever Owned

Anonymous from Louisiana on 12/29/2014

Crutchfield Customer Review (What's this?)

The sound quality is amazing and I LOVE the bass when needed. I was everything I expected and more from JBL! You cannot go wrong with this headphones!

Pros: Wireless. Awesome bass. Noise reduction.

Cons:

awesome

Anonymous from hay fork ca on 12/29/2014

Crutchfield Customer Review (What's this?)

Bought these for granddaughter for Christmas. She says " These really bump". Glad she really likes them.

Pros:

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Best bang for your buck

Ernie from Cross lanes wv on 12/28/2014

Crutchfield Customer Review (What's this?)

Shopped everywhere for Bluetooth headphones for my 13 year old daughter. She destroyed a pair of cheaper feeling Beats last year so wireless is a huge plus (you can use a cord if you need too). I figured if JBL can make sound systems for Ferrari and Lexus, they can make a quality set of headphones. So far, I am right.

Pros: Great sound. Easy to use. The blue stands out. Very affordable compared to "popular" companies, and they feel much more solid built.

Cons: None yet

daughter loved it!!!!

JeffD from Felton, DE on 12/28/2014

Crutchfield Customer Review (What's this?)

Great Headphones!!!! JBL has be known in the past and present to produce awesome products! this is no different. bluetooth, great sound quality, user friendly, absolutely looks sharp, long battery life (16 hours), quickly charged, comfortable, affordable, my teen daughter loves them. My daughter walks around the house wearing the headphones while her iPad seats in her room. I love the wireless technology. A great gift for any teen daughter that loves music.

Pros: affordable, user friendly, bluetooth, great sound, not bulky, comfortable, looks great and you can choose from different colors. Thank you JBL and Thank you Crutchfield for your customer service! Most Excellent!!! my daughter loves the headphones and she is happy! and that matters...

Cons:

Wireless JBL E40BT

John from CT on 12/28/2014

Crutchfield Customer Review (What's this?)

Perfect sound and no wires. Battary long lasting for 16 hours. Perfect and love it.

Pros: No Wires and good price compare to others.

Cons: None

Very Nice

ALEXM from California on 12/14/2014

Crutchfield Customer Review (What's this?)

My husband got these for me as an early xmas present. I do a lot of house cleaning (obviously) and I love how these are wireless and terrific sound. I love my JBL's over ear headphones.

Pros: Lightweight awesome sound quality comfortable affordable

Cons: Not much to say in this department

JBL's Bluetooth Headphones E40BT Review

stupenndus from Connecticut on 12/13/2014

Crutchfield Customer Review (What's this?)

The audio industry has been slow to introduce Bluetooth headphones into the market place and I have waited patiently to find a product that is of sufficient quality and reliability at a reasonable price to announce "Bluetooth Headphones are now a serious contender". It is true that there were a few Bluetooth headphones at or below the $100 price point last year, but it was tough to sift through the good from the bad. Recently I spotted these headphones on the Crutchfield site and started to get excited that a reliable name brand manufacturer of budget, well balanced speakers, for at least the last three decades, have entered into the Bluetooth headphone market. I ordered a pair. They arrive in a nicely packaged box which reminds me of how Apple package their products. They come complete with two wire connectors - one which is for recharging (which is not intended for USB audio connection) and an optional way to directly connect between your audio device and the headphones in a conventional fashion. The build quality is very solid and gives the impression that they will last for a decent length of time. These headphones rotate about vertical access on each side so you can adjust the angle to better fit your hears. Connecting them up the computer or mobile phone was simple and reliable - as if years of fine tuning had been applied to the design. Sound quality was impressively balanced and very listenable for a detailed review of my favorite music. Get a pair

Pros: Easy to connect to a Bluetooth transmitting/receiving device and then reconnect later on. Microphone for ease of use with your mobile phone Easy to adjust volume control Ability to add a second set of Headphones for two people to share the same Bluetooth streaming device Well balanced frequency range with respectable clarity and depth (treble and bass)

Cons: Overall comfort when worn for longer than an hour or so - since these headphones sit on your ears they can begin to ache after a certain period of time. This is typical with any headphones of this type. I found that the headphones sounded better when reversed - so that the Left side was on the right ear. This may be due to my inbalance of frequency range between left and right ears. However reversing them means that the microphone is now facing the back of your head away from the mouth.

jbl synchros e40bt

Angelo C. from ft myets, Florida 33913 on 12/11/2014

Crutchfield Customer Review (What's this?)

Awesome product. Sleek and comfortable.

Pros: Good sound and looks good.

Cons: It would have been nice to come with a carrying case.

JBL Synchros E40BT

astash from Ohio on 12/7/2014

Crutchfield Customer Review (What's this?)

very well built, a little on the heavy side, very easy to set up and user friendly.

Pros: well built, simple to use, easy operation, great battery life.

Cons: seem a little heavy, might just be me, not used to wearing full size headphones.

Great Headphones with Bluetooth bonus

ChrisP from Katy, TX on 11/14/2014

Crutchfield Customer Review (What's this?)

These headphones have exceeded my expectations. For the money, these are great headphones and bluetooth on top of that. They are designed and built well to be sturdy and easy to manipulate, but also handle being stuffed in a bag while traveling. They are comfortable and may be adjusted in and out so as to fit the head better so that the cans sit properly on the ears. Additionally, while not "over the ear", the design and size of these is ideal where it rests on the ear while blocking out external sound like an over the ear. These also adjust easily to be worn comfortably over one ear at a time. I've been wearing them for practically 2 days straight with little/no discomfort. I love the simplicity of the display (one LED) and controls (up, down for volume/ one primary control for pause/play/skip). The design of the "bezel" around the controls provides for protection from inadvertently tapping the control while adjusting the phones on your head. I had them paired to my device and up and running in literally 2 minutes after opening the box. Finally and most importantly, the sound is really good- better than expected. I know there is better, but the bass is deep and clear, and clear highs. The mid could have a bit more depth. But I can't imagine others that cost 3X+ being that factor of quality in sound.

Pros: Solid construction while lightweight. Simple controls that actually work as designed. Great sound for a bluetooth device.

Cons: A bit tricky going from one paired source to another but that is most likely more of a source issue than the design of the headphones. Nothing else identified so far.

Technically good but not comfortable

phung from Miami, FL on 10/28/2014

From a technical perspective, the sounds is good. Bluetooth sync was easy. Listening to music or talking on the phone sounds good

Pros: Hands free headset, talking on the phone via bluetooth

Cons: Not comfortable over the ears after a few minutes. The ear muffs cannot be adjusted, so they pinch your ears at the bottom.

JBL Synchros E40BT

michael from Uvalde, TX on 9/28/2014

Crutchfield Customer Review (What's this?)

Very nice blue tooth head set

Pros: Good quality

Cons: The ear pads are small, don't cover the entire ear.

Great headphones

PeterW from Hockessin, DE on 9/18/2014

Crutchfield Customer Review (What's this?)

I have several hundred classical CDs on my laptop. I can listen to them anywhere but was always tethered to the device. With the JBLs I can go anywhere within about 30 ft of the computer and hear the same great sound. The headphones are comfortable, easy to connect by Bluetooth and, to my ears, are as good in sound quality as any of the higher priced headphones I have. I'm getting much more enjoyment our of my music collection. I did not test with a smartphone.

Pros: Comfortable, easy to connect, excellent sound with fine bass. As good at reducing surrounding noise as any of my non-noise canceling headphones.

Cons: About 30 ft range with my laptop - quite adequate for me.

JBL Synchros E40BT

MICHELLE from CENTRE, AL on 9/12/2014

Crutchfield Customer Review (What's this?)

The price for these bluetooth headphones is the selling point. I purchased these for my 11 year old daughter and they are awesome. They are definitely worth the money compared to it's counterparts and you won't be paying an arm and a leg for these as you would be for those.

Pros: Price, quality of build, color choices

Cons: I would like a little more bass but they are loud enough for my daughter.

JBL Bluetooth Headphone

DAVES from Virginia Beach, VA on 9/6/2014

Crutchfield Customer Review (What's this?)

I like to use headsets especially when I'm going for a walk or working in the yard. I thought it would be nice not to have to fiddle with a cord especially when I'm trimming shrubs and the like around the house. Cords can easily get in the way and possibly cut by accident. I didn't expect the quality of the bluetooth sound to be as good as a corded set, but I was was very pleasantly surprised as how great these sounded. They also fit snug so they can be heard over lawnmower noise. I haven't tried using he phone setup yet. But, I'm very happy with the sound quality of music and audiobooks.

Pros: Great sound. Outside noise is muted because of snug fit.

Cons: They tend to fall off if you're bending over a lot picking things up while working in the yard.

Great Purchase !!

Danny from 40065 on 8/31/2014

Crutchfield Customer Review (What's this?)

I could not have asked for a better set of Bluetooth headphones . Sync with ease to everything I've tried as of yet . Great sound , and functions as they should .... Thanks yet again Crutchfield for another awesome purchase !!!

Pros: None

Cons: None

JBL Bluetooth Headphones

Webb from Mequon, WI on 8/31/2014

Crutchfield Customer Review (What's this?)

Great value when compared to Bose

Pros: Quality look and materials

Cons: No noise canceling

Details

Hands-on research

Features and Specs

General
Fit Style On-ear
Earcup Type Closed
Earcup Width x Height 2.839" x 2.839"
Noise-canceling No
Mic For Taking Calls Yes
iPhone Control Yes
Lightning Connector No
Android Control Yes
Frequency Response 20-22k Hz
Sensitivity 114 dB
Impedance 32 Ohms
Weight 7.23 ounces
Cord Length 40"
1/4-inch Adapter Included No
Volume Control Yes
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research

Features

Overview: The JBL Synchros E40BT Bluetooth headphones offer convenience and performance in one stylish and comfortable package. With ShareMe technology, you can even share your experience with another set of headphones. The E40BTs have a built-in Lithium-ion rechargeable battery that provides all day music playback capability. When the battery becomes exhausted, you can plug in the supplied auxiliary cable and continue listening.

Drivers: The Synchros E40BT over-the-ear headphones feature large 40mm drivers with PureBass performance in a lightweight closed design. The 32-ohm drivers give you crystal-clear stereo for enjoying your music or carrying on a phone conversation.

Bluetooth: The Synchros E40BT supports Bluetooth 3.0, with A2DP v1.3, AVRCP v1.5, HFP v1.6, and HSP v1.2. The left ear cup is equipped with a microphone featuring Konnexx echo-cancellation technology to give you a clean connection and clear, hands-free calling. The headphones are compatible with iPad (mini, 3rd and 4th gen), iPhone (5s, 5c, 5, and 4s), iPod touch, MacBook Air, MacBook Pro, Mac mini, Android 1.5 Cupcake to Android 4.4 KitKat, and Blackberry 1.0 to Blackberry 10 OS.

ShareMe: JBL's exclusive ShareMe technology lets you wirelessly and simultaneously share your music with another ShareMe-enabled headphone. When you are paired with a Bluetooth source device, you can then add a second pair of headphones and listen to the same source at the same time--a concert for two. ShareMe can be enabled using two E40BT headphones, a E40BT and an E50BT, or two E50BT headphones.

On-board Controls: The headphones' left ear cup includes a 4-way Multi-function Button (MFB) that lets you control your music playback and phone calls:

  • Press MFB up/down: Raises volume up or down
  • Press MFB forward:
    • Music: 1x play/pause; 2x next track; 3x previous track
    • Phone Calls: short press answer call; long press reject call; manage 2 calls at same time
  • Press and hold MFB forward: 1x fast forward; 2x fast reverse
  • Press MFB backward: ShareMe function

Battery: The built-in 3.7V Lithium-ion rechargeable battery (610 mAh) provides approximately 16 hours of music playback time, or 24 hours of phone talk time. The battery charges in approximately 3 hours via the included USB cable.

Specifications: The Synchros E40BT has the following specs:

  • Frequency Response: 20-22kHz
  • Maximum SPL: 114dB @ 30mW
  • Impedance: 32 ohms
  • BT Frequency Range: 2.402 - 2.480 GHz
  • Weight: 7.23 ounces

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Price [ MATTHEW  Feb 10, 2017 ]
JBL name has history of quality. Hope it still does. [ Daniel  Dec 16, 2016 ]
it seems that they deliver a niece sound with the Bluetooth technology. [ Lorenzo  Dec 12, 2016 ]
Jbl name and price [ Luis  Dec 07, 2016 ]
Purchased a pair of these as a gift, that person loved them so much I had to buy another pair for a Christmas gift. [ Kawhampshire  Nov 28, 2016 ]
Price and feature set [ Nicholas  Mar 18, 2016 ]
Great product [ DOUG  Feb 01, 2016 ]
My nephew requested this for Christmas [ Vernanda  Dec 24, 2015 ]
Good price point for the quality [ Robert  Dec 20, 2015 ]
These headphones are competitively priced and they sound great. I like using them while exercising. To me, the over the ear headphones are more comfortable than the in ear buds. [ Scott  Jun 25, 2017 ]
Brand recognition and price point. [ Gregory  Dec 20, 2016 ]
Gift for daughter. [ Doug  Nov 28, 2016 ]
Right quality at a competitive price and we have purchased and liked other JBL products. [ Amy  Nov 28, 2016 ]
for my kid [ Ramon San  Jan 24, 2016 ]
Great reviews and they had Udub husky purple, Go Dawgs! [ Shawn  May 13, 2017 ]
Great price, brand reputation, design and good reviews. [ Daniel  Dec 31, 2016 ]
My husbands favorite brand and color [ Jess  Dec 28, 2016 ]
Good Reviews and was on SALE. Thank You! [ J  Nov 21, 2016 ]
Good brand. Good quality. Excellent sound. Good price! [ Michael  May 16, 2016 ]
Cheap wireless on ear head phones very comparable to the high priced ones [ Christopher  Jan 02, 2016 ]
Priced right for what you get. Battery life seems great along with size. [ Danny  Dec 18, 2015 ]
Wife liked mine [ J  Apr 17, 2017 ]
quality, price, name brand, information that was provided on this website for the product [ Tobias  Dec 04, 2016 ]
read the reviews and compared to the beats wireless, much better price [ Jeff  Nov 26, 2016 ]
for my daughter [ Ramon San  Jan 24, 2016 ]
price and features [ CHRISTIANA  Dec 08, 2015 ]
I have the royal blue E40BTs and I love them. My family member wanted a pair as well, so we chose a different color to avoid mixing them up. [ Scott  May 30, 2017 ]
Best overall value [ James  Dec 10, 2016 ]
These were recommended by a Harman employee I know personally. [ T  Jul 21, 2016 ]
Works well with my I Phone and I Pad. [ Richard  May 03, 2016 ]

6 questions already asked

We do not carry the replacement cables, but you may be able to order one from JBL. You can contact them directly here: http://www.jbl.com/contactus [ Jeff  Dec 01, 2015 ]  Staff
don't know never tried [ JAMES  Jun 29, 2015 ]
Yes. Just go to JBL's Web site and locate the E40BT. Scroll down to, "Product Specs, Manuals & Compatibility." Then click on that and select the Spec Sheet or the Quick Start Guide. On the iPhone, you can touch the three little dots in the upper right and "share" the manual by emailing it to yourself, or you can open it in Safari (on the iPhone) and add it to the "Reading List" by touching the Open Book icon at the bottom of the screen. That way, you can just refer to the email you sent yourself, or open Safari's reading list and select the manual there. If you don't have an iPhone, I'm quite sure there are 2 or 3 ways to save the manual on whatever operating system you're using on your smartphone. Good luck. [ David  Jun 29, 2015 ]
I have a solution for iPhone if you are a iPhone user. Google jbl e49bt manual", click on the link that takes you to jbl. When it takes you to the page that displays your headphones then scroll to the bottom and click the + sign next to manuals & downloads. Select Quick Star Guide, this will open the manual on PDF, then on the top right click Open in iBooks. This will download the manual on your iBooks app. [ LUIS  Jun 28, 2015 ]
not sure on the phone.sorry [ Jeffrey  Jun 28, 2015 ]
Yes, JBL site has a user manual pdf that you can save locally. [ Raymond  Jun 28, 2015 ]
You certainly can get online manuals from the JBL website . Just do a product search and scroll to the bottom of the page . Specs and manuals are located there . Good luck ! [ DANIEL  Jun 28, 2015 ]
Not sure [ Al  Jun 28, 2015 ]
Yes. I had a 5s for a while and paired fine with these [ LUIS  Apr 03, 2015 ]
Absolutely . Simply sync to Bluetooth and you're off and running . Works with iPad and android devices just as easy . These sound great too . One fault ..... They must be synced each time that you use them . Your phone will list them but you have to " forget this device " and resync . Other than that they're great . Good luck . You won't find a better set of BT headphones for the price . [ DANIEL  Apr 03, 2015 ]
Yes, perfectly. I'm listening to them on an iPhone 5s right now. [ David  Apr 03, 2015 ]
I don't know for sureas I have a Samsung phone, but if it has Bluetooth then they should get along just fine. [ Steven  Apr 03, 2015 ]
They do. See under the details tab online for specifics: Bluetooth: The Synchros E40BT supports Bluetooth 3.0, with A2DP v1.3, AVRCP v1.5, HFP v1.6, and HSP v1.2. The left ear cup is equipped with a microphone featuring Konnexx echo-cancellation technology to give you a clean connection and clear, hands-free calling. The headphones are compatible with iPad (mini, 3rd and 4th gen), iPhone (5s, 5c, 5, and 4s), iPod touch, MacBook Air, MacBook Pro, Mac mini, Android 1.5 Cupcake to Android 4.4 KitKat, and Blackberry 1.0 to Blackberry 10 OS. [ MARK  Apr 03, 2015 ]
Blue headphone [ Jang  Dec 13, 2014 ]
The noise reduction is excellent I listencil to music at all levels and the sound is clear I also use it make phone calls and it works perfect no echo or distorted sounds. I love the quality I also brought my son one as a Birthday gift. [ Michael  Dec 10, 2014 ]
The external noise reduction is not great. However, the sound quality is phenomenal if you pump enough volume into them.. [ valdo  Dec 08, 2014 ]
The external noise reduction is not great. However, the sound quality is phenomenal if you pump enough volume into them.. [ valdo  Dec 08, 2014 ]
Noise reduction is the same for any on ear headphone, minimally passive. I purchased these for my wife but I have used them. The sound quality is fantastic but probably not your best choice for a trip on an airplane. They almost seem more comfortable than my over the ear JBL E50BT's. I have a good sized head and they fit great. You might get more of a passive noise cancelling from the E50BT. Hope this helped. [ JASON J  Dec 08, 2014 ]
This headphone is light. Noise reduction is ok. It's not noise canceling. Very easy to set up with Bluetooth devices. Battery lasts very long before recharging. I also have the e50bt. That's bigger and excellent noise reduction. [ Al  Dec 07, 2014 ]
I've had no issues with noise reduction . As far as sizing , they fit my head just fine ( and I have a pretty large head ) . The only issue I have , which is minor , is with comfort after wearing these awhile ..... The ear pads hold heat , therefore creating sweat . Other that this , I'd highly recommend . Good luck with your purchase . [ DANIEL  Dec 07, 2014 ]
The noise reduction on the JBL E40BT was OK and the music level was just fine, I have a big head and didn't feel any discomfort at all while using these for walking/jogging and at the gym. I did however had pairing problem with these, it seem that every day that I was going to use them it lost bluetooth connection with my iPhone or Macbook. Got tired of that and that's why I opted out for a pair of Bose SoundLink Bluetooth, I love the sound and noise reduction on these much better and the paring problem disappeared [ LUIS  Dec 07, 2014 ]
They are Christmas gifts that I haven't given yet to my kids. I'll let you know as soon as they open it. I'm planning to give it to them next week. [ RAJA  Dec 07, 2014 ]
I have been enjoying these headphones for a couple of months. They are not actively noise reducing but the foam earpieces fit comfortably and block out normal household background noise. I have a hat size of 7? inches and these are just fine. For the money I think they would be hard to beat. [ PETER  Dec 07, 2014 ]
I think the sound is perfect. I also have a big head but haven't had any difficulty in wearing the earphones for one or two hours. All in all 100% satisfied with this purchase. [ warren  Dec 07, 2014 ]
No noise reduction it all. Not the most comfortable fitting. My ears got a little sore after wearing them for a while. Okay for the price. [ Richard  Dec 07, 2014 ]
First, these headphones sound just great both as Bluetooth and wired. I read the Same reviews where someone stretched the set by placing them over the back of a couch overnight. That works if you find them to be too tight. These aren't noise canceling sets like Bose of that type, but they do block noise effectively. You can listen to these while mowing your lawn without having to turn them up dangerously high. They stay on pretty well unless you're trying to go jogging or something. I got them for the convenience of Bluetooth and was surprised at how great they sound. These are a very goof deal. [ David  Dec 07, 2014 ]
Wifi is not Bluetooth so don't confuse the two. [ thomas  Aug 09, 2016 ]
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Krissy  Aug 18, 2014 ]  Staff
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